The MCP4725 DAC is a pretty common and cheap single channel 12 bit buffered voltage DAC, it also has an onboard EEPROM. To drive this chip we can use I2C interface. The ATmega8 used for my implementation has an embedded I2C interface, so we just can use that interface. The selected I2C library is the one proposed by Peter Fleury, […]
MCP4725 DAC AVR ATmega library Read More »
Contact bounce (ref. https://en.wikipedia.org/wiki/Switch#Contact_bounce) is a common problem with mechanical switches and relays. Switch and relay contacts are usually made of springy metals. When the contacts strike together, their momentum and elasticity act together to cause them to bounce apart one or more times before making steady contact. You can find below a sample of a bouncy
Switch debounce library Read More »
PWM control project software source code in Visual Basic and are prepared (linux, windows) via RS232 serial port (19200 Baud) AT89C2051 microcontroller based on the 4-channel PWM control circuit can be made. PWM output… Electronics Projects, 4 Channel PWM Control Circuit Visual Basic RS232 AT89C2051″avr project, microcontroller projects, pwm circuits, “ PWM control project software source code in Visual
4 CHANNEL PWM CONTROL CIRCUIT VISUAL BASIC RS232 AT89C2051 Read More »
Atmel series microcontrollers series to prepare for the software quality testing to ensure ease in your test circuit has 3 different test circuit. ATmega8, ATMega16, atmega162, ATtiny2313 and ATTINY13 made to the circuit RS232… Electronics Projects, MultiPurpose Atmel Development Boards Project “avr development board, ” Atmel series microcontrollers series to prepare for the software quality
MultiPurpose Atmel Development Boards Project Read More »
Obstacle detecting sensors are one of the most basic type of sensors that electronic hobbyists use. There are several methods to make cheap obstacle sensors. These simple sensors are made using a IR Rx/Tx pair or Normal LED and LDR pair(this design is most basic and is heavily affected by environment lighting conditions). These sensor
Interfacing Ultrasonic Rangefinder with AVR MCUs – AVR Tutorial Read More »
Purpose of this article: 1) to learn how to connect the Micro controller in a simple circuit and how to power it 2) to see how to create a simple programmer (a device to connect the micro controller to a PC for uploading software) 3) to present a simple software program in C that controls
First steps with micro controllers (ATMega8) Read More »
Hardware components: Atmel ATmega328P × 1 16 MHz Crystal × 1 Capacitor 22 pF × 2 Capacitor 100 nF × 5 LED (generic) × 2 Linear Regulator (7805) × 1 Capacitor 10 µF × 2 1N4007 – High Voltage, High Current Rated Diode × 1 Resistor 10k ohm × 1 Resistor 1k ohm × 2
Franzino is a low cost Arduino standalone board Read More »
The AVRJazz Mega168 board from ermicro is designed to be used both as the AVR microcontroller learning and development board. The AVR Jazz Mega168 board is stand alone microcontroller module equipped with the latest Atmel high performance low power technology AVR ATMega168 or ATMega328 microcontroller that can be used for wide range of applications including
AVRJazz Mega168/328 Learning and Development Board Read More »
The BASIC (Beginners’ All-purpose Symbolic Instruction Code) language has been known as one of the popular high level language choice in embedded system today. In fact the born and development of the personal computer (PC) we use today has been influenced by the used of BASIC language. Today there are many of professional BASIC language
Sometimes in the embedded system world we need to process the analog world and sending the signal to the microcontroller when the analog signal exceed some predetermine limit we’ve set. Some example of this situation is to send the interrupt signal to the microcontroller operation when the temperature is already exceeds certain limit or the
Working with the Comparator Circuit Read More »
